. @ 4 hp ) dynamo ##s . asahi ' s main battery consisted of the same four el ##swick ordnance company 40 @ - @ cal ##ib ##re twelve @ - @ inch guns used in all of japan ' s preceding battleships . they were mounted in twin @ - @ gun turrets fore and aft of the superstructure . the hydraulic ##ally powered mounting ##s allowed the guns to be loaded at all angles of traverse , at a fixed elevation of + 13 @ . @ 5 ° . each mount could traverse a total of 240 degrees . they fired 850 @ - @ pound ( 38 ##6 kg ) projectile ##s at a muzzle velocity of 2 @ , @ 400 ft
. @ 4 hp ) dynamos. asahi's main battery consisted of the same four elswick ordnance company 40 @ - @ calibre twelve @ - @ inch guns used in all of japan's preceding battleships. they were mounted in twin @ - @ gun turrets fore and aft of the superstructure. the hydraulically powered mountings allowed the guns to be loaded at all angles of traverse, at a fixed elevation of + 13 @. @ 5 °. each mount could traverse a total of 240 degrees. they fired 850 @ - @ pound ( 386 kg ) projectiles at a muzzle velocity of 2 @, @ 400 ft